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Cummins/Onan — Generator Stator Reassembly

A Cummins/Onan service procedure — check it applies to your exact model before use.

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Procedure

  1. Loosen the end bell support bracket bolts, if not already removed, so that the bracket does not interfere with proper stator and end bell alignment.
  2. Align the stator and end bell with the line scribed on them during disassembly.
  3. Relubricate the bearing bore in the end bell with molybdenum disulfide paste (Onan PN 524-0118 or equivalent).
  4. Make sure the O-ring is in place in the bearing bore.
  5. Torque the stator through bolts and end bell bracket bolts to 8 lb-ft (11 N•m) and the fan hub bolt to 45 lb-ft (61 N•m).
  6. To keep the rotor from turning while tightening the fan bolt, hold the pulley bolt with a wrench.

Specs & torque values

  • Stator through bolts and end bell bracket bolts torque: 8 lb-ft (11 N•m)
  • Fan hub bolt torque: 45 lb-ft (61 N•m)
  • Molybdenum disulfide paste: Onan PN 524-0118 or equivalent

Source: manual:981-0535 Onan HDKBA HDKBB Mobile Genset Service manual (10-2002).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.